Transient voltage suppression unit



FIG. 1 is a front perspective view of a transient voltage suppression unit showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front perspective view of a second embodiment of my design;

FIG. 4 is a rear perspective view thereof. 

The ornamental design for a transient voltage suppression unit, as shown and described. 